What is the difference between scarcity and shortage?
a. scarcity is temporary while a shortage is permanent.
b. scarcity occurs when goods and services are low because prices are high.
c. shortages are temporary while scarcity always exists because there will always be a greater need for limited resources.
d. a shortage will always exist because when a drought kills crops, those crops are not salvageable, scarcities are temporary.

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?